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x86/entry: Provide idtentry_enter/exit_user()

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As there are exceptions which already handle entry from user mode and from
kernel mode separately, providing explicit user entry/exit handling callbacks
makes sense and makes the code easier to understand.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Andy Lutomirski <luto@kernel.org>
Link: https://lore.kernel.org/r/20200521202117.289548561@linutronix.de
This commit is contained in:
Thomas Gleixner
2020-05-21 22:05:18 +02:00
parent 3eeec38584
commit 9f9781b60d
2 changed files with 34 additions and 0 deletions
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3
arch/x86/include/asm/idtentry.h
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@@ -7,6 +7,9 @@
#ifndef __ASSEMBLY__
void idtentry_enter_user(struct pt_regs *regs);
void idtentry_exit_user(struct pt_regs *regs);
bool idtentry_enter_cond_rcu(struct pt_regs *regs, bool cond_rcu);
void idtentry_exit_cond_rcu(struct pt_regs *regs, bool rcu_exit);